Arastradero Preserve consists of rolling
savanna grassland hills and
evergreen forests; the preserve varies in elevation from in the northeast to in the southwest. There are four gates (labeled A, B, C, and D) into the preserve, though public parking is available only at Gate A on the North side. Gate D connects to
Foothills Park as part of the Bay-to-Ridge Trail. The park is also accessible from a pedestrian footpath that leads to the residential area on the street Paseo del Roble. The east portion of the preserve protects
Arastradero Creek, which flows into
Matadero Creek at the junction of Arastradero Road and Page Mill Road. Near the East side about a quarter mile south of the entrance is Arastradero Lake, and further south up into the preserve is Sobey Pond. The lake is also about 0.2 miles from the Paseo del Roble entrance. The southwest portion of the preserve protects seasonal Felt Creek, which runs beneath Arastradero Road and is diverted to
Felt Lake. In wet years, Felt Lake releases flows which reach
Los Trancos Creek, a
San Francisquito Creek tributary. ==Ecology==